Scratch & Win and Pull Tabs - Automatic Play

Add option to auto-play tickets on Scratch & Win and Pull Tabs on Facebook.
Wrap lines
// ==UserScript==
// @name           Scratch & Win and Pull Tabs - Automatic Play
// @namespace      http://www.mathemaniac.org
// @include        http://*.facebook.tld/scratchit/play.htm*
// @include        http://*.facebook.tld/pulltabs/play.htm*
// @author      Sebastian Paaske Tørholm - eckankar at gmail
// @version 1.2.2
// @description Add option to auto-play tickets on Scratch & Win and Pull Tabs on Facebook.
// ==/UserScript==

var loc = ""+document.location;
var isPullTabs = loc.match(/pulltabs/) != null;
var xpath = '//a[contains(text(),"Next ' + ( isPullTabs ? 'Pull Tab' : 'Ticket' ) + '")]';

if (loc.match(/autoplay/)) {
    var ticketBtn = document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    var textDiv = document.createElement('div');
    textDiv.setAttribute('style','border: 2px solid black; background-color: lightgrey; text-align: center; padding: 5px;');
    
    var swfScript = document.evaluate('//div[contains(@id,"js_buffer")]/script[contains(.,"comp.exec")]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    swfScript = swfScript.text;
    var curl = 'http://apps.bstage.ca/'+(isPullTabs ? 'pulltabs' : 'scratchit')+'/comp.exec?code='+swfScript.match(/%2Fcomp.exec%3Fcode%3D([^"]+)\\"\);/)[1];
    
    if (swfScript.match(/PairsTicket_.+\.swf/)) {
        var numPairs = swfScript.match(/\.addVariable\(\\"pairs\\", \\"(\d)\\"\);/);
        textDiv.appendChild(document.createTextNode('You have '+numPairs[1]+' pair'+(numPairs != 1 ? 's' : '') +' on this ticket.'));
        resourceText(curl,function(res) { 
            setTimeout(function() { document.location = ticketBtn.href +"?"+Math.random()+"#autoplay";},3400);  
        } );
    }
    else if (swfScript.match(/(MatchGameTicket|MakeADealTicket)_.+\.swf/)) {
        var prize = swfScript.match(/\.addVariable\(\\"wp\\", \\"(\d+)\\"\);/);
        textDiv.appendChild(document.createTextNode('You won '+(prize[1] = 0 ? 'no' : prize[1]) +' token'+(prize[1] != 1 ? 's' : '') +' on this ticket.'));
        resourceText(curl,function(res) { 
            setTimeout(function() { document.location = ticketBtn.href +"?"+Math.random()+"#autoplay";},3400);  
        } );
    }
    else if (swfScript.match(/PullTabs_.+\.swf/)) {
        var prize = swfScript.match(/\\"outcome\\", \\"([^\\]+)\\"/);
        var prizeType;
        if (prize[1].match(/l/))
            prizeType = "nothing";
        else if (prize[1].match(/t(\d+)/))
            prizeType =  prize[1].replace(/t/,"").replace(/%7Cm/g,"×") + " tokens";
        else
            prizeType = prize[1];
        
        textDiv.appendChild(document.createTextNode('You won '+prizeType+' on this ticket.'));
        resourceText(curl,function(res) { 
            setTimeout(function() { document.location = ticketBtn.href +"?"+Math.random()+"#autoplay";},3400);  
        } );
    }
    else
        textDiv.appendChild(document.createTextNode("Sorry, no autoplay available for this ticket type.\nPlease tell Eckankar at gmail dot com, thanks!"));

    ticketBtn.parentNode.insertBefore(textDiv,ticketBtn.nextSibling);
}
else {
    var it = document.evaluate(xpath, document, null, XPathResult.UNORDERED_NODE_ITERATOR_TYPE,null);
    var node;
    var nodes = new Array();
    while (node = it.iterateNext()) {
        nodes.push(node);
    }
    while (node = nodes.pop()) {
        var aBtn = document.createElement('a');
        aBtn.className = "button main"
        aBtn.appendChild(document.createTextNode('AutoPlay'));
        aBtn.href = aBtn.href+"?"+Math.random()+"#autoplay";
        node.parentNode.insertBefore(aBtn,node.nextSibling);
    }
}

// snagged from http://userscripts.org/users/55607.
function resourceText(url,func,key,post)
{
    if (!post && key && window.GM_getResourceText)
    {
        func(GM_getResourceText(key));
    } else {
        var options = {
            "url":url,
            "method": ( post ? "post" : "get" ),
            "headers":{
                 "User-Agent":"Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14",
                 "Accept":"text/json,text/xml,text/html"
            },
            "onload":function (e) {
                var ok = true;
                if (url.match("[?&]type=json"))
                {
                    var rjson = evalValue(e.responseText).response;
                    if (rjson.errorMessage)
                    {
                        if (!rjson.actions) ok = false;
                        alert(rjson.errorMessage);
                    }
                    else if (rjson.warningMessage)
                    {
                        alert(rjson.warningMessage);
                    }
                    if (rjson.location && (!rjson.location[0] || !GM_getValue(rjson.location[0],false)))
                    {
                        GM_openInTab(rjson.location[1]);
                        if (rjson.location[0])
                        {
                            alert("A new tab was opened.\nUrl: " + rjson.location[1]);
                            GM_log(rjson.location);
                            GM_getValue(rjson.location[0],true);
                        }
                    }

                    if (ok)
                    {
                        func(e.responseText);
                    }
                } else {
                    if (ok)
                    {
                        func(e.responseText);
                    }
                }
            },
            "onerror":function (e) {
                alert("An error has ocurred while requesting "+url);
            }
        };
        if (post)
        {
            var data = "";
            for ( n in key )
            {
                data += "&" + n + "=" + encodeURIComponent(key[n]);
            }
            data = data.substr(1);

            options.headers["Content-type"] = "application/x-www-form-urlencoded";
            options.headers["Content-length"] = data.length;
            options.data = data;
        }
        GM_xmlhttpRequest(options);
    }
}
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